216526013 has 8 divisors (see below), whose sum is σ = 236488896. Its totient is φ = 196609600.

The previous prime is 216526007. The next prime is 216526031. The reversal of 216526013 is 310625612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216526013 - 2¹⁶ = 216460477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216526313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481 + ... + 20862.

It is an arithmetic number, because the mean of its divisors is an integer number (29561112).

Almost surely, 2^216526013 is an apocalyptic number.

It is an amenable number.

216526013 is a deficient number, since it is larger than the sum of its proper divisors (19962883).

216526013 is a wasteful number, since it uses less digits than its factorization.

216526013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23235.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 216526013 is about 14714.8229007352. The cubic root of 216526013 is about 600.4866542468.

The spelling of 216526013 in words is "two hundred sixteen million, five hundred twenty-six thousand, thirteen".